 | Sarah Snook als Sarah |
 | Lily LaTorre als Mia |
 | Neil Melville als Albert |
 | Katherine Slattery als Jordie |
 | Damon Herriman als Pete |
 | Hugo Soysa als Toby |
 | Naomi Rukavina als Denise |
 | Georgina Naidu als Andrea |
 | Maurial Spearim als Keira |
 | Shabana Azeez als Nowa |
 | Trevor Jamieson als Sandy |
 | Greta Scacchi als Joan |
 | Sunny Whelan als Alice |
 | Julia Davis als Gail |
| Poppy Skerry als Young Sarah |
| Jen Salisbury als Young Joan |
| Rosie Mitchell als Little Sarah |
| D'Arcy Carty als Little Alice |
 | Michala Banas als Alice's Breaths |
| Heather Burridge als Carer |
 | Genevieve Morris als (uncredited) |
| Daina Reid | Director |
| Hannah Kent | Screenplay |
| Anna McLeish | Producer |
| Sarah Shaw | Producer |
| Jack Christian | Executive Producer |
| D.J. McPherson | Executive Producer |
| Naomi Mulholland | Co-Producer |
| Bonnie Elliott | Director of Photography |
| Angela Conte | Makeup & Hair |
| Marion Boyce | Costume Design |
| Nick Meyers | Editor |
| Vanessa Cerne | Production Design |
| Loretta Cosgrove | Art Direction |
| Tom Heuzenroeder | Sound Effects Editor |
| Robert Mackenzie | Sound Designer |
| Justin Spasevski | Sound Effects Editor |
| Rui Li | VFX Artist |
| Mark Bradshaw | Original Music Composer |
| Marcus Whale | Original Music Composer |
| Katie Anderson | Executive Producer |
| Nate Bolotin | Executive Producer |
| Jake Carter | Executive Producer |
| Maxime Cottray | Executive Producer |
| Olivia Humphrey | Executive Producer |
| Daina Reid | Executive Producer |
| Sarah Snook | Executive Producer |
| Nick Spicer | Executive Producer |
| Aram Tertzakian | Executive Producer |
| Deanne Weir | Executive Producer |
| Katia Nizic | Associate Producer |
| Allison Meadows | Casting |
| Sean Lahiff | Additional Editor |
| Darren Richmond | Graphic Designer |
| Phoebe Wolf | Props |
| Vinny Alfano | ADR Recordist |
| Miles Henry | ADR Recordist |
| Rebecca Bainger | Stunt Double |
| Russell Frost | Stunt Coordinator |
| Morgan Smallbone | Extras Casting |
| Oriana Merullo | Costume Coordinator |
| Nathan Croft | First Assistant Director |
| Dean Fay | Second Assistant Director |
| Sam Hewison | Third Assistant Director |
| Murray Curtis | Visual Effects Supervisor |
| Lee Yee | Foley Editor |
| Clare Plueckhahn | Underwater Camera |
